Lecture 03 - IT 1020SEF

How many characters can be stored using the standard ASCII code?

• 64

• 128

• 256

• 512

WHAT IS MY NAME???????????????????????????

• DANI

• DANDUL

• DANIEL

• FATMAN

Why was Unicode developed as an alternative to ASCII?

• To store images

• To support different languages and more characters

• To improve binary representation speed

• To improve binary representation speed

In image representation, what is a pixel?

• A unit of sound

• A binary code for text

• The smallest unit of a digital image

• A color model

How many colors can be represented with 2 bits per pixel?

• 2

• 4

• 6

• 8

Which of the following describes the RGB model?

• A method to represent sound in binary

• A way to represent colors using Red, Green, and Blue

• A text encoding system

• A binary system for representing video

How many bits per pixel are used in the 'true color' representation?

• 8 bits

• 16 bits

• 24 bits

• 32 bits

In the analog-to-digital conversion of sound, what does 'sampling rate' refer to?

• The number of bits used per sample

• The number of times per second the sound wave is measured

• The frequency of the sound

• The loudness of the sound

What is the main difference between analog and digital signals?

• Analog signals are continuous, while digital signals are discrete

• Analog signals use binary code, while digital signals use waveforms

• Digital signals cannot represent images, while analog signals can

• Digital signals are ugly, while analog signal nice

How is a video represented in a computer system?

• As a single continuous image

• As a sequence of frames or images displayed one after the other

• As a series of text data

• As a single sound wave